Sylvania



HARNISH & KING Grist Mill.

Patented March 9, 1869 wzizfmess'as W MM Pholo-Lilhognphar. Washinghn.D. C.

BENJAMIN HARNISH AND ROBERT J. KING, or LANCASTER, PENN- SYLVAN I A.

- 12mm Patent No. 87,667, ,dated Ma/rch 9, 1869.

The Schedule referred to in these Lettetrlatant and making part a: thesame.

To whom 41 concern placed as to perform the oificeof a belt-tightener,as

Be it knownthat we, BENJAMIN Hsmusrr, (miller,) shown. and ROBERT J.KING, of Lancaster, in the county of Thus, we do away with all thefriction or wear and Lancaster, and State of Pennsylvania, have inventeda expense of cog-gearing, and greatly simplify the manew and usefulImprovement on Portable Mills; and chinery, and reduce the powerrequired to drive the we do hereby declare that the following is afull,clear, mill; and, as we confidently believe, from the results,

and exact description of the construction and operaafter a full andsatisfactory trial, greatly increasing the A tion of the same, referencebeing. had to the accomamount groundper hour over other millsrunningburrs panying drawings, making a part of this specification, oflike size.

in whichl The cracking-mill O is of the ordinary pattern, only Figure 1is a perspective view of a mill with our imthat we can use plain orreversible segments, locking provements iipiace. each other, and securedby a slot and flange-lug, so Figure 2 shows the pulley D of thecracker-spindle, that a worn-out or injured segment or segments can andpulley B of the burrs, with'the belt F driving both. be readilyreplaced.

Figure 3 shows the sieve-spout V and separating- The manner of groovingmay be as novel as we find spout W,'in relation to the eye of the stoneand outer it useful. casing and burrs. t Fig. 4 shows the conicgrinding-nut, or core.

Figure 4 shows the cracker O, with a cap, X, having We also have a sievein the spout V, that feeds the an opening to receive cars of corn.cracked grain to the eye E of the mill, or burr, with an G, a bill-hookknife, adjustable on the spindle T, additional spont,W, under it,inclined from both sides with a set-screw, S. or ends of the upperspout, to convey the finely-ground R is a gauge-ring, adjustable bywashers interposed. or sifted portions inside of the case, or space thatsur- 0, feed-spout. rounds the stone, whence it finds its way outthrough P, slide-plate over the knife. the discharge-spout M, with theground materials from The nature of our invention consists inusingacracker the burrs, or grinding-surface.

separate and apartfiromthe burrs,so'combined, however, We find that atleast one-tenth is sufficiently fine, as to bedriveu by the action ofthe same strap or belt as it comes from the cracker, and by thusseparating which drives the burr, without additional gear, other it, andpreventing it from entering the eye of the stone, than an ordinarytightening-pulley; also, in the diwe increase the yield, and againlessen the amount of minished eye of the burr, so as to greatly increasethe power.

grinding-surface, and in sitting the finer particles, as We are aware ofthe'numerous devices patented for they come from the cracker, so thatthe. coarser pargrindingmills, and therefore confine our claims to theticles that require grinding only enter the eye of the mode of drivingthe cracker and burrs by the same burr, thereby greatly relieving thetendency to clog, strap, and the trough and sieve-arrangement, leadingand secure a greater yield at a much less expense of from the cracker tothe burrs, and outer space between power. the burr and case.

To enable others skilled in the art to make, and use What we claim asour invention, and desire to seour improvement, a brief description willsuffice. cure by Letters Patent, is-- Fig. 1 shows the frame-work andparts in perspective. The combination of the cracking-mill O and grind-A is a sheet-iron or wooden case, surrounding the ing-burrs, as shown,within their case A, the two mills burrs in the usual manner. connectedby the compound chute and separatorW V,

We claim no special novelty in the burrs or drivingand driven togetherby means of the belt F and pulleys pulley, B, attached to the spindle.We, however, do 13 D, all arranged and operated as and for the purposenot hollow out the eye of the burrs in the usual manherein set forth.ner, but leave it nea ly flat, thereby greatly increasing B. HARNISH.the grinding-surface. ROBT. KING.

The pulley B, for the burrs, is one foot in diameter. -Witnesses:

The pulley D, that drives the spindle or grinding-cone WALTER G. EVANS,of the cracker, is, say, three feet in diameter, and so JACOB STAUFFEB.

